Gasoline filter



H. JACOBSON GASOLINE FILTER Sept. 8, 1931.

Filed May 1'7 1928 INVENTOR Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE HARRY JACOBSON, F BROOKLYN, NEW YORK GASOLINE FILTER This invention relates to gasoline cleaners of the type which are designed to be inserted in the feed line of an internal combustion engine, such as is used in an automobile,

aeroplane, motor boat, or in other powerdriven apparatus for the purpose of purifying the gasoline before it is fed to the carburetor of the engine.

My invention contemplates the provision of a simple and inexpensive device adapted to be completely assembled in comparatively few operations and adapted to be made practically throughout from stamped or pressed sheet material.

The various objects of my invention can be clear from the description which follows and from the drawings in which,

Fig. 1 is a top plan view of my improved filter.

Fig. 2 is a vertical section of the same, and

Fig. 3 is a bottom plan view of the removable plug' in the bottom of the filter.

, In that practical embodiment of my invention which I have illustrated by Way of example, I prefer to secure all of the parts permanently in place with the exception of a drain plug soon to be described, for the purposes of preventing tampering with the 30 parts, or accidental displacement thereof, and for economy and ease of construction.

My improved cleaner consists of a cup or container member 10 preferably pressed from sheet material and completely open at the top thereof. The upper edge of the cup 10 is flanged or outturned to form the substantially horizontal flange 11. At the cen tral portion of the bottom 12, an opening as 13 is provided, the material 14: about the peripheral edge of the perforation being preferably pressed inwardly to form a tube or flange adapted to be threaded for the reception of the plug 15, the shank 16 of the plug being correspondingly threaded.

Said plug is completely closed at its upper end 17, and is provided with hexagonal head as 18, which may be suitably manipulated by a wrench, and which is adapted to form a closure for the opening 13 together with the outer face of the bottom 12,? a gasket of cork or other suitable material being interposed between the head 18 of the plug and said face. It will be understood that the contents of the cup 10 may be readily drained together with any dirt or foreign matter which may accumulate in the cup, by simply removing the plug 15 from the opening 13.

The cover member 20 of my improved device is preferably secured permanently to the cup 10. For this purpose, the outer edge portion 21 thereof may be rolled, spun or otherwise turned about the flange 11, a gasket as 22 being interposed, if desired, between the cover and said flange for preventing leakage.

At two places in said cover, the material is pressed, preferably downwardly, to provide the internally threaded cylindrical tubes or supports 23 and 24c. Secured to the cover as by forcing the cylindrical portion 25 thereof about the support 23, is the screen l1older26 preferably pressed from sheet material. I prefer to make the lower end of said screen holder of as large a diameter 7 as possible in order to hold a screen therein of maximum screening area. As illustrated, this is done by forming a conical portion 27 near the lower end of, said holder. The screen 28, preferably of wire cloth having a smooth, substantially continuous surface of thin, closely woven wire to prevent the passage of water therethrough, is made preferably in the form of a circular disc, and is held in the screen holder by doubling under the loweredge 29 of said holder about the peripheral portion of the screen. A suitable outlet pipe or fitting may be threaded into the support 23 and leads back to the fuel line or to the carburetor.

The support 24 is similarly internally threaded as at 31 for the reception of a suitable inlet pipe or fitting. 1

About the outer cylindrical surface of the support 24, I press the inlet pipe 32, the fit between the pipe 32 and the support beingsufiiciently tight to prevent displacement of said pipe, in the same manner as the con- 1 nection between the support 23 and the screen holder is made.

If desired, a quantity of water may be inserted into the bottom of the container, sufiicient to cover the lower end of the pipe 32 so that gasoline passing through said pipe is forced to pass through and to be cleared by the water before filling up the container sufficiently to reach the screen 28. It will be seen that the stream of gasoline has a considerable distance to travel from the end of the inlet pipe 32 before it can reach the screen 28 whereby much of the solid matter in the gasoline is removed be fore reaching the screen and before passing therethrough to the feed line.

Should it be desired to clean the screen 28, gasoline or other suitable cleaning fluid may be forced through the outlet opening 30; thereby dislodging any solid material which may have become lodged in the interstices of the screen, the dislodging stream moving in a direction opposite to that in which the fuel. stream fed to the carburetor moves. For cleaning the accumulated mat ter from the cup 10, the plug 15 is removed until gasoline comes out clean, after which it is replaced, ready for further operation.

By permanently securing the cover 20 to the cup 10, I am able to dispense entirely with the expensive, cumbersome and inefficient closure devices between said cup and cover and am able entirely to prevent leakage. By reason of my improved construction, I am also able to hang my improved filter from a suitable fuel container, such as the outlet of the vacuum tank of an automobile, without danger of the parts becoming displaced and consequent leaks.

If desired, however, the filter may be arranged anywhere in the feed line.

It will be seen that I have provided a simple and efiicient filter which may be eco 'nomieally manufactured in large quantities and which is well-adapted for the purposes for which it is intended. It will further be seen that comparatively few parts are provided in my improved device, practically all of which maybe readily pressed or otherwise made from sheet material and economically assembled.

I do not wlsh to be understood as limiting myself to the specific details of construction shown and described herein but intend to avail myself of the various possible changes and modifications falling within the terms of the appended claims and the scope of the present invention.

I claim: y I

, 1. In an article of the character described, a comparatively thin, one-piece sheet metal cup of uniform thickness throughout having a threaded opening in the bottom thereof, a removable plug for said opening, a substantially fiat sheet metal cover for said outlet openin cup of substantially the same thickness as the material of the cup having inlet and outlet openings completely therethrough, a short tube integral with the cover depending from each of said openings, pressed from the cover from the material of the openings and threaded, each tube serving as a means of direct attachment of at least two other members to said cover and serving also to reinforce said cover against distor tion, an outwardly extending flange on the peripheral edge of the cup, a gasket between the cup and cover, said cup and cover being permanently secured together at the peripheral edges thereof against separation with the gasket therebetween by a bent edge on the cover underlying the flange, a one-piece sheet metal screen holder secured to the inside of said cover at the tube of the outlet opening, an integral enlarged bottom end on said holder of greater diameter than said a thrcadlcss inlet pipe secured to said cover at the tube of, said inlet opcning and extending into said cup to a point near the bottom of the cup, and a disc-like metallic wire screen held permanently parallel to the cover and below the juncture thereof with the cup, by said screen holder adjacent said outlet opening, the lower peripheral edge of said holder being bent about the edge of the screen into contact with the upper and lower peripheral portions of the screen, and enclosing the edge of the screen.

2. In an article of the character described, a permanently closed container including a comparatively thin cover, a one-piece, sheet metal, inverted fun11el-shaped screen holder carried by said cover and extending into the container, and bent from thin material, an unthreaded inlet pipe carried by said cover and extending to a point near the bottom of said container, said cover having integral thin extensions of substantially the same thickness as the material of the cover and provided with internally threaded openings at said screen holder and said inlet pipe, for the removable reception of fittings on one face thereof, and for the unthreaded reception thereabout of the screen holder and inlet pipe respectively on the other side thereof.

3. In a six-piece gasoline filter, a onc-piecc thin sheet metal container having an internally threaded opening in the bottom thereof, a re-entrant sheet metal drain plug for the opening closed at its upper end and ex ternally threaded and having a lowermost flange, a gasket between the flange of the plug and the bottom of the container, a thin sheet metal cover for the container having a pair of upright openings completely therethrough, an internally threaded projection extending from the upper face of the cover downwardly into the container at each of the openings and formed from the mat& rial of the cover removed from the opening and internally threaded to receive a threaded fitting, and having a smooth outer surface, a flat screen of thin wire finely woven and arranged parallel to the inner face of the cover, and a one-piece funnel-shaped thin sheet metal screen holder having an enlarged bottom folded integrally over the edge of the screen, and having a constricted upper end forced permanently about the smooth outer face of one of the projections of the cover, and a pipe forced permanently over the other projection and extending vertically toward and near the bottom of the container, said cover and said container being permanently secured together after the screen holder and the pipe have been assembled permanently on the cover.

4. A five-piece gasoline filter constructed substantially entirely of sheet metal, comprising a onepiece thin sheet metal cup, having an outwardly projecting flange at its upper edge, and an opening in its bottom, a removable drain plug for the opening, a flat sheet metal cover for the cup having a pair of openings therein, tubular projections integral With the cover arranged about the openings and extending downwardly from the cover into the interior of the cup to provide a flat upper face on the cover, each of said integral projections being adapted to receive and support an independent pair of members, being threaded on one surface to have a fitting removably secured directly thereto, and being unthreaded on the opposite surface for the permanent reception of another member slidably, a permanent leakproof joint between the cover and the cup flange, a funnel-shaped thin sheet metal member secured to the under side of the cover and forced over one of the projections, a flat screen of greater area than that of the cover openings suspended by said member below the cover, and a fold in said member engaging opposed faces of the screen.

5. In a gasoline filter, a comparatively thin one-piece sheet metal cup of uniform thickness throughout, having a threaded opening in the bottom thereof formed by pressing the material of the opening inwardly into an inwardly extended tube and threading the interior of the tube, a threaded metal plug for said opening, a substantially fiat sheet metal cover for said cup of substantially the same thickness as the material of the cup, having upright inlet and outlet openings therein, a short tube integral with the cover depending from each n of said openings and pressed from the cover and from the material of the opening, and threaded, each tube serving as a means of direct attachment of at least two other members to said cover, and serving also to reinforce said cover against distortion, said cup and cover being permanently secured together at the peripheral edges thereof against separation, a threadless inlet pipe secured to said cover at the tube of said inlet opening, and extending into the cup to a point near the bottom of the cup, a screen and a sheet metal member holding the screen and permanently secured in forced engagement with the other tube.

HARRY J ACOBSON. 

